wdream

Results 2 issues of wdream

The field type is DateTime, the default value is null, and NullPointException when a query is mapped to a Java. ![image](https://user-images.githubusercontent.com/40849836/181216812-a532bfed-1a66-4fca-a4cb-037d8839dbb6.png)

bug

cc.blynk.clickhouse.http.DefaultHttpConnector#buildConnection this's method. newConnection.setConnectTimeout(properties.getConnectionTimeout()) That's a problem, The internal property member used to set ConnectionTimeout